You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
138 lines
4.1 KiB
138 lines
4.1 KiB
/* |
|
* Copyright (c) 1993 Ulrich Pegelow <pegelow@moorea.uni-muenster.de> |
|
* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl> |
|
* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com> |
|
* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl> |
|
* Copyright (c) 2003-2006 Roland McGrath <roland@redhat.com> |
|
* Copyright (c) 2006-2015 Dmitry V. Levin <ldv@altlinux.org> |
|
* Copyright (c) 2015-2017 The strace developers. |
|
* All rights reserved. |
|
* |
|
* Redistribution and use in source and binary forms, with or without |
|
* modification, are permitted provided that the following conditions |
|
* are met: |
|
* 1. Redistributions of source code must retain the above copyright |
|
* notice, this list of conditions and the following disclaimer. |
|
* 2. Redistributions in binary form must reproduce the above copyright |
|
* notice, this list of conditions and the following disclaimer in the |
|
* documentation and/or other materials provided with the distribution. |
|
* 3. The name of the author may not be used to endorse or promote products |
|
* derived from this software without specific prior written permission. |
|
* |
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
*/ |
|
|
|
#include "defs.h" |
|
#include "ipc_defs.h" |
|
|
|
#ifdef HAVE_SYS_MSG_H |
|
# include <sys/msg.h> |
|
#elif defined HAVE_LINUX_MSG_H |
|
# include <linux/msg.h> |
|
#endif |
|
|
|
#include "xlat/ipc_msg_flags.h" |
|
#include "xlat/resource_flags.h" |
|
|
|
SYS_FUNC(msgget) |
|
{ |
|
const int key = (int) tcp->u_arg[0]; |
|
if (key) |
|
tprintf("%#x", key); |
|
else |
|
tprints("IPC_PRIVATE"); |
|
tprints(", "); |
|
if (printflags(resource_flags, tcp->u_arg[1] & ~0777, NULL) != 0) |
|
tprints("|"); |
|
print_numeric_umode_t(tcp->u_arg[1] & 0777); |
|
return RVAL_DECODED; |
|
} |
|
|
|
static void |
|
tprint_msgsnd(struct tcb *const tcp, const kernel_ulong_t addr, |
|
const kernel_ulong_t count, const unsigned int flags) |
|
{ |
|
tprint_msgbuf(tcp, addr, count); |
|
printflags(ipc_msg_flags, flags, "MSG_???"); |
|
} |
|
|
|
SYS_FUNC(msgsnd) |
|
{ |
|
tprintf("%d, ", (int) tcp->u_arg[0]); |
|
if (indirect_ipccall(tcp)) { |
|
tprint_msgsnd(tcp, tcp->u_arg[3], tcp->u_arg[1], |
|
tcp->u_arg[2]); |
|
} else { |
|
tprint_msgsnd(tcp, tcp->u_arg[1], tcp->u_arg[2], |
|
tcp->u_arg[3]); |
|
} |
|
return RVAL_DECODED; |
|
} |
|
|
|
static void |
|
tprint_msgrcv(struct tcb *const tcp, const kernel_ulong_t addr, |
|
const kernel_ulong_t count, const kernel_ulong_t msgtyp) |
|
{ |
|
tprint_msgbuf(tcp, addr, count); |
|
tprintf("%" PRI_kld ", ", msgtyp); |
|
} |
|
|
|
static int |
|
fetch_msgrcv_args(struct tcb *const tcp, const kernel_ulong_t addr, |
|
kernel_ulong_t *const pair) |
|
{ |
|
if (current_wordsize == sizeof(*pair)) { |
|
if (umoven_or_printaddr(tcp, addr, 2 * sizeof(*pair), pair)) |
|
return -1; |
|
} else { |
|
unsigned int tmp[2]; |
|
|
|
if (umove_or_printaddr(tcp, addr, &tmp)) |
|
return -1; |
|
pair[0] = tmp[0]; |
|
pair[1] = tmp[1]; |
|
} |
|
return 0; |
|
} |
|
|
|
SYS_FUNC(msgrcv) |
|
{ |
|
if (entering(tcp)) { |
|
tprintf("%d, ", (int) tcp->u_arg[0]); |
|
} else { |
|
if (indirect_ipccall(tcp)) { |
|
const bool direct = |
|
#ifdef SPARC64 |
|
current_wordsize == 8 || |
|
#endif |
|
get_tcb_priv_ulong(tcp) != 0; |
|
if (direct) { |
|
tprint_msgrcv(tcp, tcp->u_arg[3], |
|
tcp->u_arg[1], tcp->u_arg[4]); |
|
} else { |
|
kernel_ulong_t pair[2]; |
|
|
|
if (fetch_msgrcv_args(tcp, tcp->u_arg[3], pair)) |
|
tprintf(", %" PRI_klu ", ", tcp->u_arg[1]); |
|
else |
|
tprint_msgrcv(tcp, pair[0], |
|
tcp->u_arg[1], pair[1]); |
|
} |
|
printflags(ipc_msg_flags, tcp->u_arg[2], "MSG_???"); |
|
} else { |
|
tprint_msgrcv(tcp, tcp->u_arg[1], |
|
tcp->u_arg[2], tcp->u_arg[3]); |
|
printflags(ipc_msg_flags, tcp->u_arg[4], "MSG_???"); |
|
} |
|
} |
|
return 0; |
|
}
|
|
|